Suppose that your mother and father are both healthy but carry the allele for cystic fibrosis, which is caused by a recessive allele. What are the odds of you having at least one allele for the disorder?
a. 1 in 4
b. 1 in 2
c. 3 in 4
d. 1
Ans: c. 3 in 4
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Where is the visual cortex of the brain found?
A. frontal lobe of the cerebrum B. the occipital lobe C. the parietal lobe D. the cerebellum
A researcher has mapped the entire genome of an insect. She notices that the genome contains around a thousand copies of a particular DNA sequence. What is the most likely function of this DNA sequence?
A. The sequence most likely has no function. B. Its function is to code for rRNA. C. Its function is to provide antibiotic resistance. D. Its function is to copy and move within the genome via an RNA intermediate.
Which of the following has been correlated
with the ability of rats to cope with stress as adults? a. A nurturing mother. b. The number of siblings they have. c. The temperature they are raised in. d. The altitude they are born at. e. All of these.
A flower is not ideally matched with a pollinator that visits it daily. Why might that be?
A) The flower does not need pollination. B) The flower is imperfect. C) The flower does not have sufficient nutrients. D) The flower has several other pollinators with differing traits.